TY - JOUR
T1 - Effect of PMMA and PVA coating on the performance of optical microbottle resonator humidity sensors
AU - Johari, Md Ashadi Md
AU - Pour, Meisam Parsa
AU - Al Noman, Abdullah
AU - Khudus, Muhammad Imran Mustafa Abdul
AU - Jali, Mohd Hafiz Bin
AU - Maslinda, M. S.
AU - Ali, Ummu Umairah Mohd
AU - Harun, Sulaiman Wadi
N1 - Publisher Copyright:
© 2019 Wiley Periodicals, Inc.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - This article compares the performances of uncoated and coated optical microbottle resonators (MBR) for humidity sensing. A technique called “soften-and-compress” was used to form the MBR with midriff diameter of Db = 190 μm, stem diameter of Ds = 125 μm and bottle length of Lb = 182 μm. The MBRs were prepared in three different conditions, which are noncoated MBR, PMMA (poly methyl meth acrylate) coated MBR, and PVA (polyvinyl-alcohol) coated MBR. The MBRs characteristic was investigated by employing a 2 μm tapered microfiber and tested for humidity sensing within a humidity range of 40% to 95%. The Q-factor obtained were >104 for all MBRs. The performance as humidity sensor was defined by the sensitivity and linearity of MBRs, which were investigated based on wavelength shift and also the transmitted power. The MBRs are undergoing a 180-seconds stability test at 65% RH humidity level. It is found that the PVA coated MBR performed better than other MBRs as a humidity sensor based on sensitivity, linearity, and stability measurements.
AB - This article compares the performances of uncoated and coated optical microbottle resonators (MBR) for humidity sensing. A technique called “soften-and-compress” was used to form the MBR with midriff diameter of Db = 190 μm, stem diameter of Ds = 125 μm and bottle length of Lb = 182 μm. The MBRs were prepared in three different conditions, which are noncoated MBR, PMMA (poly methyl meth acrylate) coated MBR, and PVA (polyvinyl-alcohol) coated MBR. The MBRs characteristic was investigated by employing a 2 μm tapered microfiber and tested for humidity sensing within a humidity range of 40% to 95%. The Q-factor obtained were >104 for all MBRs. The performance as humidity sensor was defined by the sensitivity and linearity of MBRs, which were investigated based on wavelength shift and also the transmitted power. The MBRs are undergoing a 180-seconds stability test at 65% RH humidity level. It is found that the PVA coated MBR performed better than other MBRs as a humidity sensor based on sensitivity, linearity, and stability measurements.
KW - humidity sensor
KW - microfiber optic
KW - optical microresonator
UR - https://www.scopus.com/pages/publications/85074831811
U2 - 10.1002/mop.32133
DO - 10.1002/mop.32133
M3 - Article
AN - SCOPUS:85074831811
SN - 0895-2477
VL - 62
SP - 993
EP - 998
JO - Microwave and Optical Technology Letters
JF - Microwave and Optical Technology Letters
IS - 3
ER -